Results 1 to 2 of 2

Math Help - Multi Step Equations, and a little multiplication/division trouble

  1. #1
    Junior Member
    Joined
    Aug 2007
    Posts
    54

    Multi Step Equations, and a little multiplication/division trouble

    i have been doing some normal homework, and i have reached a few barricades...
    heres an example of the first type.
    -4
    -- = 72
    5
    -4 -5
    - -
    5 4
    they cancel out..
    -5
    - 72
    4

    -5 72
    - --
    4 1

    4 and 72 simplify to 1 and 18..

    -5 18=90
    - --= -
    1 1= 1
    bring the X down and simplify 90 over 1..
    x=90

    Solving Equations: Solve the Equation.
    41.
    T = L
    -2= 2

    43.
    3 ,,, 1
    -z -5-
    4 ,,, 2
    *note, commas are used simply for spacing purposes, they are not truly in the problem.
    44.
    1 ,,,, 2
    -y= 5 -
    3 ,,,, 3
    now the Multi Step Equations...these caused me a lil bit more confusion

    32.
    -4
    - (x+3) = 27
    9

    33.
    17 = 2(3x+1) - x

    34.
    4x
    -- + 3 = 23
    3

    35.
    ,,,,,,,,, 7x
    -10 = 4- 4

    36.
    ,,,,,,, 1
    -10 = -x+x
    ,,,,,,, 2

    again, commas are purely for spacing. thanks in advance
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor kalagota's Avatar
    Joined
    Oct 2007
    From
    Taguig City, Philippines
    Posts
    1,026
    Quote Originally Posted by Nightfire View Post
    i have been doing some normal homework, and i have reached a few barricades...
    heres an example of the first type.
    -4
    -- = 72
    5
    -4 -5
    - -
    5 4
    they cancel out..
    -5
    - 72
    4

    -5 72
    - --
    4 1

    4 and 72 simplify to 1 and 18..

    -5 18=90
    - --= -
    1 1= 1
    bring the X down and simplify 90 over 1..
    x=90

    Solving Equations: Solve the Equation.
    41.
    T = L
    -2= 2

    43.
    3 ,,, 1
    -z -5-
    4 ,,, 2
    *note, commas are used simply for spacing purposes, they are not truly in the problem.
    44.
    1 ,,,, 2
    -y= 5 -
    3 ,,,, 3
    now the Multi Step Equations...these caused me a lil bit more confusion

    32.
    -4
    - (x+3) = 27
    9

    33.
    17 = 2(3x+1) - x

    34.
    4x
    -- + 3 = 23
    3

    35.
    ,,,,,,,,, 7x
    -10 = 4- 4

    36.
    ,,,,,,, 1
    -10 = -x+x
    ,,,,,,, 2

    again, commas are purely for spacing. thanks in advance
    for the 1st one, where is x?

    41) \frac{T}{-2}=\frac{L}{2}
    multiply 2 to both sides of equation, then
    -T=L

    43) where is the equal sign?

    44) \frac{1}{3}y = 5\frac{2}{3} multiply 3 to both sides,
    \rightarrow \, y=(5)(2)=10

    32) \frac{-4}{9}(x+3) = 27, multiply \frac{-9}{4}, you have x+3 = 27\frac{-9}{4}
    \rightarrow \, x=27\frac{-9}{4} -3 = \frac{-324-12}{4}=\frac{-336}{4} = -84

    33) 17 = 2(3x+1) - x \, \rightarrow \, 17 = 6x + 2 -x \, \rightarrow \, 15 = 5x \, \rightarrow x=3<br />

    34) \frac{4x}{3} + 3 = 23 \, \rightarrow \, \frac{4x}{3} = 20 \, \rightarrow \, 4x=15 \, \rightarrow x=\frac{15}{4}

    can you do the last 2?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Fractions in multi-step equations
    Posted in the Algebra Forum
    Replies: 11
    Last Post: May 4th 2011, 11:43 AM
  2. Multi-step equations
    Posted in the Algebra Forum
    Replies: 1
    Last Post: October 26th 2008, 04:51 PM
  3. Multi Step Equation
    Posted in the Algebra Forum
    Replies: 1
    Last Post: October 7th 2008, 08:58 AM
  4. multi-step problem
    Posted in the Algebra Forum
    Replies: 2
    Last Post: June 5th 2008, 09:13 AM
  5. Multi Step Equations snag
    Posted in the Algebra Forum
    Replies: 1
    Last Post: November 3rd 2007, 03:57 PM

Search Tags


/mathhelpforum @mathhelpforum